Making Tax Digital software for sole traders
£3/mo MTD filing app for the sole trader who has never used accounting software. Connect a bank, auto-sort transactions, file 4 quarterly updates.
Free · No credit card · Live in 14 days
Source: Google Trends
From April 2026, Making Tax Digital for Income Tax is mandatory for the 860,000 UK sole traders and landlords earning over £50,000 — and the threshold drops to £30,000 in 2027 and £20,000 in 2028, pulling in roughly 1.75M more. The catch: sole traders are the single largest group that has never touched accounting software. They keep a spreadsheet or a shoebox of receipts and file one Self Assessment a year. Overnight, HMRC now wants four quarterly digital submissions plus a final declaration through approved software. The incumbents answering that demand — QuickBooks Sole Trader at £10/mo, Xero Simple at £7/mo, Sage Start at £14/mo, FreeAgent at £19/mo — are full double-entry accounting suites built for people who already speak 'reconciliation' and 'chart of accounts'. The Register reported fewer than 3 in 10 affected taxpayers have even registered. The gap is a dead-simple, £3/mo Making Tax Digital software for the non-accountant sole trader: connect one bank feed, let AI sort each transaction into an HMRC category, get a plain-English nudge before each quarterly deadline, and tap submit. No ledgers, no jargon, no accountant required.
Why now
The trigger is regulatory and dated: Making Tax Digital for Income Tax became mandatory on 6 April 2026 for sole traders and landlords with qualifying income over £50,000 — about 860,000 people — with the threshold falling to £30,000 in April 2027 and £20,000 in April 2028. That is a three-year escalator of forced demand. HMRC's own messaging and The Register confirm registration is running far behind (fewer than 3 in 10), so the buyers exist but haven't chosen a tool yet. The incumbents are racing up-market and feature-up (Intuit just launched a dedicated 'QuickBooks Sole Trader' SKU for the UK's 3.1M one-person businesses), but they all assume the user wants accounting software. They don't — they want to comply and get back to work. A focused MTD-only filing app that a window cleaner or single-property landlord can finish in ten minutes a quarter wins the simplest, largest, most underserved slice before the 2027 wave hits.
Market gap
MTD-compatible software today splits into two camps, both wrong for the smallest sole trader. Full accounting suites — QuickBooks Sole Trader (£10/mo), Xero Simple (£7/mo), Sage Start (£14/mo), FreeAgent (£19/mo, free with a NatWest/Mettle account) — assume the user wants bookkeeping, invoicing and double-entry concepts. Free bridging tools assume the user keeps a correctly-structured spreadsheet, which the spreadsheet-and-shoebox crowd does not. Neither serves the person whose entire need is: stay legal with HMRC, in four ten-minute quarterly sessions, without learning accounting. That person is the majority of the 860,000 first-wave taxpayers and almost all of the 2027–2028 waves. A guided, AI-categorising, £3/mo MTD-only filing app — recognised on the HMRC list, Open-Banking native, plain-English — owns that lane with cleaner positioning and far faster time-to-value than any suite.
Proof signals
6 sourced proofs ↓Fewer than 3 in 10 register for HMRC's Making Tax Digital shake-up
The Register, Apr 2026 — adoption running far behind the mandate. The buyers are legally required to act but haven't chosen software yet: a wide-open, time-boxed acquisition window.
theregister.com ↗ComplaintUK Petition: create a government-owned, free MTD software
Jun 2026 parliamentary petition demanding free MTD software. Direct evidence that affected taxpayers find the paid options too expensive or too complex — validating a radically simple, near-free wedge.
petition.parliament.uk ↗LaunchIntuit launches QuickBooks Sole Trader for the UK's 3.1M one-person businesses
Incumbent validating the exact segment — but as a full financial-management suite at £10/mo. Confirms the market size while leaving the 'I just need to comply' simplicity lane open.
stocktitan.net ↗SignalAsk HN: How are UK sole traders preparing for quarterly MTD reporting?
Feb 2026 HN thread — sole traders openly unsure how to handle quarterly submissions. The confusion is the product brief: handhold them through it.
news.ycombinator.com ↗ReviewSpreadsheets no longer compliant without bridging software
Sage/Bishop Fleming guidance: the spreadsheet many sole traders rely on stops being acceptable unless paired with bridging software, which most don't understand. The migration is forced, not optional.
sage.com ↗ReviewMTD software comparison guides multiplying for sole traders
ANNA, TechRadar and MTD.digital all publishing 'best MTD software for sole traders 2026' roundups — high commercial-intent search demand with low paid-ad competition on the long-tails.
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Pricing tiers
Free 'Am I caught by MTD?' checker + quarterly deadline calendar
30-second quiz on income and start date that tells the user exactly when they must register and submit, plus an .ics calendar of their four quarterly deadlines. Email capture, drips into the trial.
SoleFile MTD
One Open Banking feed, AI transaction categorisation to HMRC categories, four quarterly MTD submissions + final declaration, deadline reminders. One person, one trade or one property. Cancel anytime.
SoleFile Plus
Everything in MTD plus multiple income sources (trade + property), simple mileage and home-office allowances, receipt photo capture, and a year-end tax estimate so there are no January surprises.
Pricing thesis · subscription
A flat £3/mo sits mentally below every recognised suite (Xero £7, QuickBooks £10, Sage £14, FreeAgent £19) and below the 'do I really need this?' threshold for someone who just wants to comply. It is high enough to fund support and Open Banking fees, low enough to convert the price-sensitive spreadsheet crowd. The £8 Plus tier captures multi-income and year-end-estimate demand without forcing a migration.
Benchmarks. QuickBooks Sole Trader £10/mo. Xero Simple £7/mo. Sage Accounting Start £14/mo. FreeAgent £19/mo (free with a NatWest/RBS/Mettle business account). Free bridging tools exist but require a correctly-kept spreadsheet. A guided £3/mo MTD-only filing app undercuts all of them on both price and simplicity.
Execution plan
Week 1-3: build the filing core — Open Banking connection (TrueLayer/Plaid UK), an LLM categoriser mapping transactions to HMRC SA103/SA105 boxes, the MTD ITSA quarterly-update flow, Stripe billing at £3/mo. Week 4-6: pass HMRC sandbox testing and apply to the recognised-software list (the real gate); ship the free 'Am I caught by MTD?' checker as the lead magnet. Week 7-12: SEO content on 'best making tax digital software for sole traders', 'easiest MTD software', 'making tax digital software free'; launch in r/UKPersonalFinance, r/SmallBusinessUK and r/UKLandlords; partner outreach to the NRLA and trade bodies. Month 4+: paid search on 'MTD software' long-tails (low ad competition), referral incentive, and prep the simpler-onboarding push for the April 2027 £30K wave.
Avatar · Channel · Pitch
Dave, 44, a self-employed plumber in Leeds turning over £62K. He has never used accounting software — his bookkeeping is a carrier bag of receipts and a notebook, and his cousin does his Self Assessment each January. He just got an HMRC letter saying he must file quarterly from April 2026 and has no idea what 'MTD-compatible software' means.
r/UKPersonalFinance, r/SmallBusinessUK, r/selfemployed and r/UKLandlords; the HMRC recognised-software list itself; NRLA and trade-body newsletters; SEO on 'MTD software for sole traders' and 'making tax digital free'; paid search on incumbent-alternative long-tails.
HMRC now wants four tax submissions a year. SoleFile connects your bank, sorts everything for you, and files each one in ten minutes. £3/mo, no accounting knowledge needed.
Value equation — how this sells
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Demand
YouTube
| Top keywords | Vol/mo | Growth (12mo) | |
|---|---|---|---|
| Fastest growing | |||
| making tax digital for sole traders | — | — | |
| best making tax digital app | — | — | |
| making tax digital software for cis | — | — | |
| Highest volume | |||
| making tax digital software | — | — | |
| making tax digital for landlords | — | — | |
| making tax digital deadline | — | — | |
| Most relevant | |||
| best making tax digital software for sole traders | — | — | |
| easiest making tax digital software | — | — | |
| making tax digital software free | — | — | |
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